Curtain-roller



W. B.l NQYES. Curtai'n''Roller.

fNo. 225,857.. Paten-ted Mar. -23, asso.

ATENT OFFICE;

WALTER B. NOYES, OF BOSTON, MASSACHUSETTS.

CURTAIN- ROLLER.

SPECIFICATION forming part of Letters Patent No. 225,857, dated March23, 1880.

Application filed Juno 24, 1875).

To all 'whom tt may concern:

Be it known that I, WALTER B. NoYEs, of Boston, in the coun ty ofSuifolk, and inthe State of Massachusetts, have invented certain new anduseful Improvements in Curtain-Rollers; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing had to the aceompanyingdrawings, and to the letters of referencemarked thereon, making a part of this specification.

The nature of my invention consists in the construction and arrangementof a spring curtain-roller, as will be hereinafter more fully set forth.

In order to enable others skilled in the art l to which my inventionappertains to make and use the same, I will now proceed to describe itsconstruction and operation, referring to the annexed drawings, in which-Figure 1 is a longitudinal section of my invention. Figs. 2, 3, and 4are detailed views of parts thereof.

A represents the wooden spindle, one end of which is bored to receivethe iron spindle B. This spindle B has two side wings, Z1 b, to entercorresponding slots in the bearing a of the bracket O. (Shown in, Fig.3.) The other end of the wooden spindle zA iscut away for a suitabledistance to receive .the spiral spring I). A metal ferrule, d. isfastened on each end of the wooden spindle A. The spiral spriu g D isput on the reduced portion of the wooden spindle after it has been eutoff the proper length, to give the required tension to hold the rollerin the brackets. The large or torsion spring E is then slipped ou thespindle A, the small end next to the head or metallic spindle. I is ametallic tube fitted and attached to a wooden plug, G, and a Washer, c,is placed in said tube against the end of the plug. The reduced end ofthe spindle A is then passed through the tube F and Washer c, andthrough the plug G, the end projecting' into a recess formed in theouter end of said plug. The washer c prevents the spring D from comingin contact with the wood. A pin, j', is then passed through theprojecting end of the wooden spindle, when the whole is fastenedtogether ready to go into the roller.

In the recess in the end of the plug G is a screw or other stop, It,against which the pin f will come. It will readily be seen that bypressing the plug G inward the pin f will clear the stop h, and thetorsion-spring E can then be wound up more or less, as required, and thespiral spring D will, as soon as the pressure is removed from the plug,bring the parts back to their former position, and the pin f against thestop h prevents any further unwinding of the spring, though in practiceit will be wound still more when the curtain is pulled down. This deviceis then inserted into the hollow roller H, and the head end I put on andglued. At the same time the foot -plug G is nailed solid to the roller.To one end of the roller is then attached a head-piece, J having arecessin its outer side, in which recess one or more dogs, m m, are pivoted.These dogs may be pivoted directly to the head, or to a plate fastenedin said head, and they are intended to take into the slots in thebearing a of the bracket to formA a stop-curtain. These dogs operate bygravity as they pass over the top of the bearing a. If the movement ofthe roller be slow, the dogs will drop into the slot and stop theroller. If the movement be rapid, they will pass over the slot withoutdropping in.

When only one dog is used the roller can only be stopped once duringeach revolution, and by increasing the number of dogs the number ofpossible stoppages for each revolution is correspondingly increased.

When a balance and not a stop-curtain is desired, the dogs m may be heldout of the way by pins t'.

One cud of the torsion-spring E is fastened to the tube F or to the plugG, and the other end to the wooden spindle. As the curtain is loweredthe spring E winds onto the spindle, and the spindle is forced againstthe tube with a greater or less force, according to the winding of thespring creating a friction in proportion to the weight of the curtain,thus evenly balancing a light or a heavy curtain. The tube will yieldeasily, and operates, therefore, as a spring to a certain extent. Thetube F also prevents any interference of the torsionspring with thespiral spring.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

The combination, with e hollow curtainroller, of the spindle A, cutaway, es shown, at one end, the hollouT plug G, having the end of thespindle free to move endwisc therein, but locked from rotating movementby the pin f und stop h, es described, the springs D E, and the tube F,interposed between the springs, so that one will be entirely inelosedthereby :incl the other pass over the outside of the tube, substantially:ts and for the purposes herein set forth.

- In testimony that I claim the foregoingI 15 have hereunto set my handthis 21st.dey of May, 1879.

Witnesses:

C. B. SOUTHARD, CAssIUs C. Pommes,

